Modify online_memory_block() to accept the online type through its arg
parameter rather than calling mhp_get_default_online_type() internally.

This prepares for allowing callers to specify explicit online types.

Update the caller in add_memory_resource() to pass the default online
type via a local variable.

No functional change.

Cc: Oscar Salvador <[email protected]>
Cc: Andrew Morton <[email protected]>
Acked-by: David Hildenbrand (Red Hat) <[email protected]>
Signed-off-by: Gregory Price <[email protected]>
---
 mm/memory_hotplug.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 86d3faf50453..282bf3d89613 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1338,7 +1338,9 @@ static int check_hotplug_memory_range(u64 start, u64 size)
 
 static int online_memory_block(struct memory_block *mem, void *arg)
 {
-       mem->online_type = mhp_get_default_online_type();
+       enum mmop *online_type = arg;
+
+       mem->online_type = *online_type;
        return device_online(&mem->dev);
 }
 
@@ -1492,6 +1494,7 @@ static int create_altmaps_and_memory_blocks(int nid, 
struct memory_group *group,
 int add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags)
 {
        struct mhp_params params = { .pgprot = pgprot_mhp(PAGE_KERNEL) };
+       enum mmop online_type = mhp_get_default_online_type();
        enum memblock_flags memblock_flags = MEMBLOCK_NONE;
        struct memory_group *group = NULL;
        u64 start, size;
@@ -1580,7 +1583,8 @@ int add_memory_resource(int nid, struct resource *res, 
mhp_t mhp_flags)
 
        /* online pages if requested */
        if (mhp_get_default_online_type() != MMOP_OFFLINE)
-               walk_memory_blocks(start, size, NULL, online_memory_block);
+               walk_memory_blocks(start, size, &online_type,
+                                  online_memory_block);
 
        return ret;
 error:
-- 
2.53.0


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